<?php

  // $config_database = include "./config.php";
  // var_dump($config_database);
  function C($config=null){
  	$config_database = include "./config.php";
  	if($config==null){
  		return $config_database;
  	}else{
  		if (isset($config_database[$config])) {
  			return $config_database[$config];
  		}else{
  			return "你输入的配置项".$config."不存在";
  		}
  	}
  }

?>